863304681 has 4 divisors (see below), whose sum is σ = 1151072912. Its totient is φ = 575536452.

The previous prime is 863304661. The next prime is 863304703. The reversal of 863304681 is 186403368.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 863304681 - 2⁷ = 863304553 is a prime.

It is a super-2 number, since 2×863304681² = 1490589944473023522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863304641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143884111 + ... + 143884116.

It is an arithmetic number, because the mean of its divisors is an integer number (287768228).

Almost surely, 2^863304681 is an apocalyptic number.

It is an amenable number.

863304681 is a deficient number, since it is larger than the sum of its proper divisors (287768231).

863304681 is a wasteful number, since it uses less digits than its factorization.

863304681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287768230.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 863304681 is about 29382.0469164420. The cubic root of 863304681 is about 952.1850649004.

The spelling of 863304681 in words is "eight hundred sixty-three million, three hundred four thousand, six hundred eighty-one".